- Download and install the software.
- It will scan your computer for problems.
- The tool will then fix the issues that were found.
Microsoft Teams login error CAA2000B is often annoying to end users. This prevents them from accessing their account. Several attempts to sign in lead to the following message: We were unable to register your device or add your account to Windows. Your access to organization resources may be limited. Here are some troubleshooting steps you can take to try and remove Microsoft Teams error code CAA2000B.
Most people already rely on teams to collaborate with office members, participate in video conferencing, and so on. Thus, such errors can affect the end-user experience. Try the following to fix the problem.
Table of Contents:
Restart Microsoft Teams
- If it’s just an occasional temporary error, open Task Manager.
- Click on the Processes tab.
- Then right click Microsoft Teams.
- Select End Task to exit the application.
- Restart Teams and see if you can sign in this time.
If this is not possible, use the web browser version of Microsoft Teams instead. If the caa2000b error only affects the desktop version of Microsoft Teams, sign in using the web version of the app.
Reset Internet Settings
As explained in the “Causes” section, poor Internet connection or incorrect Internet settings may be the cause of this problem. Users were able to fix this issue after resetting network settings. Follow the instructions below:
Updated: April 2025
This tool is highly recommended to help you fix your error. Plus, this tool offers protection against file loss, malware, and hardware failures, and optimizes your device for maximum performance. If you already have a problem with your computer, this software can help you fix it and prevent other problems from recurring:
- Step 1 : Install the PC Repair and Optimizer Tool. (Windows 10, 8, 7, XP, Vista).
- Step 2 : Click Start Scan to determine what problems you are experiencing with your computer.
- Step 3 : Click Repair Allto resolve all problems.
- Click Start, find and open Internet Options. A window will open containing settings related to the Internet, i.e. H. General, security, privacy, etc.
- Go to the Advanced tab and click Reset. Windows will now reset all Internet settings and override any settings you made for them.
- Now start Microsoft Teams and try to sign in. This should fix your problem.
Update Microsoft Teams
Then check the list to see if a newer version of the Microsoft Teams app is available and install it.
- Click your profile picture and select Check for Updates.
- Then restart your computer and try logging in again.
Clear Microsoft Teams app cache
In Windows 10, every app and program you want to run stores temporary files in a cache folder. If the Microsoft Teams cache is corrupted in any way, the authentication certificates will be stopped and you will not be able to sign in. Fix anything,
- In Windows 10 Search, paste the following path address:
- % appdata% \ Microsoft \ Teams \ Cache
- Select and delete all files listed in the cache folder.
- Repeat the above step for the next
- Repeat the above steps and clear the cache stored in the following folders:
% appdata% \ Microsoft \ Teams \ Application Cache \ Cache
% appdata% \ Microsoft \ Teams \ blob_storage
% appdata% \ Microsoft \ Teams \ Databases
% appdata% \ Microsoft \ Teams \ GPUcache
% appdata% \ Microsoft \ Teams \ IndexedDB
% appdata% \ Microsoft \ tests \ Local storage
% appdata% \ Microsoft \ Teams \ tmp
When you’re done, restart Microsoft Teams and see if that fixes the issue.
APPROVED: To fix Windows errors, click here.